drm/nouveau/pci: new subdev

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

15 files changed, 491 insertions, 39 deletions

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/device.h b/drivers/gpu/drm/nouveau/include/nvkm/core/device.h
index 8ef8058ed0313..bc151c64bbad2 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/device.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/core/device.h
@@ -4,6 +4,7 @@
 #include <core/object.h>
 
 enum nvkm_devidx {
+	NVKM_SUBDEV_PCI,
 	NVKM_SUBDEV_VBIOS,
 	NVKM_SUBDEV_DEVINIT,
 	NVKM_SUBDEV_IBUS,
@@ -108,6 +109,7 @@ struct nvkm_device {
 	struct nvkm_mc *mc;
 	struct nvkm_mmu *mmu;
 	struct nvkm_subdev *mxm;
+	struct nvkm_pci *pci;
 	struct nvkm_pmu *pmu;
 	struct nvkm_therm *therm;
 	struct nvkm_timer *timer;
@@ -168,6 +170,7 @@ struct nvkm_device_chip {
 	int (*mc     )(struct nvkm_device *, int idx, struct nvkm_mc **);
 	int (*mmu    )(struct nvkm_device *, int idx, struct nvkm_mmu **);
 	int (*mxm    )(struct nvkm_device *, int idx, struct nvkm_subdev **);
+	int (*pci    )(struct nvkm_device *, int idx, struct nvkm_pci **);
 	int (*pmu    )(struct nvkm_device *, int idx, struct nvkm_pmu **);
 	int (*therm  )(struct nvkm_device *, int idx, struct nvkm_therm **);
 	int (*timer  )(struct nvkm_device *, int idx, struct nvkm_timer **);
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/pci.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/pci.h
new file mode 100644
index 0000000000000..ea4b0cce6159a
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/pci.h
@@ -0,0 +1,21 @@
+#ifndef __NVKM_PCI_H__
+#define __NVKM_PCI_H__
+#include <core/subdev.h>
+
+struct nvkm_pci {
+	const struct nvkm_pci_func *func;
+	struct nvkm_subdev subdev;
+};
+
+u32 nvkm_pci_rd32(struct nvkm_pci *, u16 addr);
+void nvkm_pci_wr08(struct nvkm_pci *, u16 addr, u8 data);
+void nvkm_pci_wr32(struct nvkm_pci *, u16 addr, u32 data);
+void nvkm_pci_rom_shadow(struct nvkm_pci *, bool shadow);
+void nvkm_pci_msi_rearm(struct nvkm_pci *);
+
+int nv04_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
+int nv40_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
+int nv4c_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
+int nv50_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
+int gf100_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/subdev.c b/drivers/gpu/drm/nouveau/nvkm/core/subdev.c
index 65e0cb35e1a0e..7de98470a2a06 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/subdev.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/subdev.c
@@ -44,6 +44,7 @@ nvkm_subdev_name[NVKM_SUBDEV_NR] = {
 	[NVKM_SUBDEV_MC     ] = "mc",
 	[NVKM_SUBDEV_MMU    ] = "mmu",
 	[NVKM_SUBDEV_MXM    ] = "mxm",
+	[NVKM_SUBDEV_PCI    ] = "pci",
 	[NVKM_SUBDEV_PMU    ] = "pmu",
 	[NVKM_SUBDEV_THERM  ] = "therm",
 	[NVKM_SUBDEV_TIMER  ] = "tmr",
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index b67cb37719481..743a3e9796dd7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -85,6 +85,7 @@ nv4_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -105,6 +106,7 @@ nv5_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -126,6 +128,7 @@ nv10_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -145,6 +148,7 @@ nv11_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -166,6 +170,7 @@ nv15_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -187,6 +192,7 @@ nv17_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -208,6 +214,7 @@ nv18_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -229,6 +236,7 @@ nv1a_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -250,6 +258,7 @@ nv1f_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -271,6 +280,7 @@ nv20_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -292,6 +302,7 @@ nv25_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -313,6 +324,7 @@ nv28_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -334,6 +346,7 @@ nv2a_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -355,6 +368,7 @@ nv30_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -376,6 +390,7 @@ nv31_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -398,6 +413,7 @@ nv34_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -420,6 +436,7 @@ nv35_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -441,6 +458,7 @@ nv36_chipset = {
 	.imem = nv04_instmem_new,
 	.mc = nv04_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv04_pci_new,
 	.timer = nv04_timer_new,
 	.disp = nv04_disp_new,
 	.dma = nv04_dma_new,
@@ -463,6 +481,7 @@ nv40_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv40_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv40_timer_new,
 	.volt = nv40_volt_new,
@@ -488,6 +507,7 @@ nv41_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv40_mc_new,
 	.mmu = nv41_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -513,6 +533,7 @@ nv42_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv40_mc_new,
 	.mmu = nv41_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -538,6 +559,7 @@ nv43_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv40_mc_new,
 	.mmu = nv41_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -563,6 +585,7 @@ nv44_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv44_mc_new,
 	.mmu = nv44_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -588,6 +611,7 @@ nv45_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv40_mc_new,
 	.mmu = nv04_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -613,6 +637,7 @@ nv46_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv44_mc_new,
 	.mmu = nv44_mmu_new,
+	.pci = nv4c_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -638,6 +663,7 @@ nv47_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv40_mc_new,
 	.mmu = nv41_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -663,6 +689,7 @@ nv49_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv40_mc_new,
 	.mmu = nv41_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -688,6 +715,7 @@ nv4a_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv44_mc_new,
 	.mmu = nv44_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -713,6 +741,7 @@ nv4b_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv40_mc_new,
 	.mmu = nv41_mmu_new,
+	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -738,6 +767,7 @@ nv4c_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv4c_mc_new,
 	.mmu = nv44_mmu_new,
+	.pci = nv4c_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -763,6 +793,7 @@ nv4e_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv4c_mc_new,
 	.mmu = nv44_mmu_new,
+	.pci = nv4c_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -791,6 +822,7 @@ nv50_chipset = {
 	.mc = nv50_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv50_pci_new,
 	.therm = nv50_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -816,6 +848,7 @@ nv63_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv4c_mc_new,
 	.mmu = nv44_mmu_new,
+	.pci = nv4c_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -841,6 +874,7 @@ nv67_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv4c_mc_new,
 	.mmu = nv44_mmu_new,
+	.pci = nv4c_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -866,6 +900,7 @@ nv68_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv4c_mc_new,
 	.mmu = nv44_mmu_new,
+	.pci = nv4c_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -894,6 +929,7 @@ nv84_chipset = {
 	.mc = nv50_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv50_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -925,6 +961,7 @@ nv86_chipset = {
 	.mc = nv50_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv50_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -956,6 +993,7 @@ nv92_chipset = {
 	.mc = nv50_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv50_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -987,6 +1025,7 @@ nv94_chipset = {
 	.mc = g94_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -1005,63 +1044,65 @@ nv94_chipset = {
 static const struct nvkm_device_chip
 nv96_chipset = {
 	.name = "G96",
+	.bar = g84_bar_new,
 	.bios = nvkm_bios_new,
-	.gpio = g94_gpio_new,
-	.i2c = g94_i2c_new,
-	.fuse = nv50_fuse_new,
+	.bus = g94_bus_new,
 	.clk = g84_clk_new,
-	.therm = g84_therm_new,
-	.mxm = nv50_mxm_new,
 	.devinit = g84_devinit_new,
-	.mc = g94_mc_new,
-	.bus = g94_bus_new,
-	.timer = nv41_timer_new,
 	.fb = g84_fb_new,
+	.fuse = nv50_fuse_new,
+	.gpio = g94_gpio_new,
+	.i2c = g94_i2c_new,
 	.imem = nv50_instmem_new,
+	.mc = g94_mc_new,
 	.mmu = nv50_mmu_new,
-	.bar = g84_bar_new,
+	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
+	.therm = g84_therm_new,
+	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
+	.bsp = g84_bsp_new,
+	.cipher = g84_cipher_new,
+	.disp = g94_disp_new,
 	.dma = nv50_dma_new,
 	.fifo = g84_fifo_new,
 	.gr = g84_gr_new,
-	.gr = nv50_gr_new,
 	.mpeg = g84_mpeg_new,
-	.vp = g84_vp_new,
-	.cipher = g84_cipher_new,
-	.bsp = g84_bsp_new,
-	.disp = g94_disp_new,
 	.pm = g84_pm_new,
+	.sw = nv50_sw_new,
+	.vp = g84_vp_new,
 };
 
 static const struct nvkm_device_chip
 nv98_chipset = {
 	.name = "G98",
+	.bar = g84_bar_new,
 	.bios = nvkm_bios_new,
-	.gpio = g94_gpio_new,
-	.i2c = g94_i2c_new,
-	.fuse = nv50_fuse_new,
+	.bus = g94_bus_new,
 	.clk = g84_clk_new,
-	.therm = g84_therm_new,
-	.mxm = nv50_mxm_new,
 	.devinit = g98_devinit_new,
-	.mc = g98_mc_new,
-	.bus = g94_bus_new,
-	.timer = nv41_timer_new,
 	.fb = g84_fb_new,
+	.fuse = nv50_fuse_new,
+	.gpio = g94_gpio_new,
+	.i2c = g94_i2c_new,
 	.imem = nv50_instmem_new,
+	.mc = g98_mc_new,
 	.mmu = nv50_mmu_new,
-	.bar = g84_bar_new,
+	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
+	.therm = g84_therm_new,
+	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
+	.disp = g94_disp_new,
 	.dma = nv50_dma_new,
 	.fifo = g84_fifo_new,
 	.gr = g84_gr_new,
-	.sw = nv50_sw_new,
 	.mspdec = g98_mspdec_new,
-	.sec = g98_sec_new,
-	.msvld = g98_msvld_new,
 	.msppp = g98_msppp_new,
-	.disp = g94_disp_new,
+	.msvld = g98_msvld_new,
 	.pm = g84_pm_new,
+	.sec = g98_sec_new,
+	.sw = nv50_sw_new,
 };
 
 static const struct nvkm_device_chip
@@ -1080,6 +1121,7 @@ nva0_chipset = {
 	.mc = g98_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -1111,6 +1153,7 @@ nva3_chipset = {
 	.mc = g98_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gt215_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1144,6 +1187,7 @@ nva5_chipset = {
 	.mc = g98_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gt215_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1176,6 +1220,7 @@ nva8_chipset = {
 	.mc = g98_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gt215_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1208,6 +1253,7 @@ nvaa_chipset = {
 	.mc = g98_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -1239,6 +1285,7 @@ nvac_chipset = {
 	.mc = g98_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -1270,6 +1317,7 @@ nvaf_chipset = {
 	.mc = g98_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gt215_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1304,6 +1352,7 @@ nvc0_chipset = {
 	.mc = gf100_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = gf100_pci_new,
 	.pmu = gf100_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1339,6 +1388,7 @@ nvc1_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gf100_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1373,6 +1423,7 @@ nvc3_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gf100_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1407,6 +1458,7 @@ nvc4_chipset = {
 	.mc = gf100_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = gf100_pci_new,
 	.pmu = gf100_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1442,6 +1494,7 @@ nvc8_chipset = {
 	.mc = gf100_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = gf100_pci_new,
 	.pmu = gf100_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1477,6 +1530,7 @@ nvce_chipset = {
 	.mc = gf100_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = gf100_pci_new,
 	.pmu = gf100_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1512,6 +1566,7 @@ nvcf_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gf100_pmu_new,
 	.therm = gt215_therm_new,
 	.timer = nv41_timer_new,
@@ -1546,6 +1601,7 @@ nvd7_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.therm = gf119_therm_new,
 	.timer = nv41_timer_new,
 	.ce[0] = gf100_ce_new,
@@ -1578,6 +1634,7 @@ nvd9_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gf119_pmu_new,
 	.therm = gf119_therm_new,
 	.timer = nv41_timer_new,
@@ -1612,6 +1669,7 @@ nve4_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gk104_pmu_new,
 	.therm = gf119_therm_new,
 	.timer = nv41_timer_new,
@@ -1648,6 +1706,7 @@ nve6_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gk104_pmu_new,
 	.therm = gf119_therm_new,
 	.timer = nv41_timer_new,
@@ -1684,6 +1743,7 @@ nve7_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gf119_pmu_new,
 	.therm = gf119_therm_new,
 	.timer = nv41_timer_new,
@@ -1744,6 +1804,7 @@ nvf0_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gk110_pmu_new,
 	.therm = gf119_therm_new,
 	.timer = nv41_timer_new,
@@ -1779,6 +1840,7 @@ nvf1_chipset = {
 	.mc = gf106_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gk110_pmu_new,
 	.therm = gf119_therm_new,
 	.timer = nv41_timer_new,
@@ -1814,6 +1876,7 @@ nv106_chipset = {
 	.mc = gk20a_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gk208_pmu_new,
 	.therm = gf119_therm_new,
 	.timer = nv41_timer_new,
@@ -1849,6 +1912,7 @@ nv108_chipset = {
 	.mc = gk20a_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gk208_pmu_new,
 	.therm = gf119_therm_new,
 	.timer = nv41_timer_new,
@@ -1884,6 +1948,7 @@ nv117_chipset = {
 	.mc = gk20a_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gm107_pmu_new,
 	.therm = gm107_therm_new,
 	.timer = gk20a_timer_new,
@@ -1913,6 +1978,7 @@ nv124_chipset = {
 	.mc = gk20a_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gm107_pmu_new,
 	.timer = gk20a_timer_new,
 	.ce[0] = gm204_ce_new,
@@ -1942,6 +2008,7 @@ nv126_chipset = {
 	.mc = gk20a_mc_new,
 	.mmu = gf100_mmu_new,
 	.mxm = nv50_mxm_new,
+	.pci = nv40_pci_new,
 	.pmu = gm107_pmu_new,
 	.timer = gk20a_timer_new,
 	.ce[0] = gm204_ce_new,
@@ -1966,7 +2033,6 @@ nv12b_chipset = {
 	.ltc = gm107_ltc_new,
 	.mc = gk20a_mc_new,
 	.mmu = gf100_mmu_new,
-	.mmu = gf100_mmu_new,
 	.timer = gk20a_timer_new,
 	.ce[2] = gm204_ce_new,
 	.dma = gf119_dma_new,
@@ -2018,6 +2084,7 @@ nvkm_device_subdev(struct nvkm_device *device, int index)
 	_(MC     , device->mc     , &device->mc->subdev);
 	_(MMU    , device->mmu    , &device->mmu->subdev);
 	_(MXM    , device->mxm    ,  device->mxm);
+	_(PCI    , device->pci    , &device->pci->subdev);
 	_(PMU    , device->pmu    , &device->pmu->subdev);
 	_(THERM  , device->therm  , &device->therm->subdev);
 	_(TIMER  , device->timer  , &device->timer->subdev);
@@ -2504,6 +2571,7 @@ nvkm_device_ctor(const struct nvkm_device_func *func,
 		_(NVKM_SUBDEV_MC     ,      mc);
 		_(NVKM_SUBDEV_MMU    ,     mmu);
 		_(NVKM_SUBDEV_MXM    ,     mxm);
+		_(NVKM_SUBDEV_PCI    ,     pci);
 		_(NVKM_SUBDEV_PMU    ,     pmu);
 		_(NVKM_SUBDEV_THERM  ,   therm);
 		_(NVKM_SUBDEV_TIMER  ,   timer);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/priv.h b/drivers/gpu/drm/nouveau/nvkm/engine/device/priv.h
index adebf52578c10..6dea6e8fc8547 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/priv.h
@@ -17,6 +17,7 @@
 #include <subdev/mc.h>
 #include <subdev/mmu.h>
 #include <subdev/mxm.h>
+#include <subdev/pci.h>
 #include <subdev/pmu.h>
 #include <subdev/therm.h>
 #include <subdev/timer.h>
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/Kbuild
index a1bb3e48739c5..ee2c38f50ef5d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/Kbuild
@@ -13,6 +13,7 @@ include $(src)/nvkm/subdev/ltc/Kbuild
 include $(src)/nvkm/subdev/mc/Kbuild
 include $(src)/nvkm/subdev/mmu/Kbuild
 include $(src)/nvkm/subdev/mxm/Kbuild
+include $(src)/nvkm/subdev/pci/Kbuild
 include $(src)/nvkm/subdev/pmu/Kbuild
 include $(src)/nvkm/subdev/therm/Kbuild
 include $(src)/nvkm/subdev/timer/Kbuild
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c
index be116f35c4bc5..ffa4b395220aa 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c
@@ -22,6 +22,8 @@
  */
 #include "priv.h"
 
+#include <subdev/pci.h>
+
 static u32
 prom_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios)
 {
@@ -39,23 +41,16 @@ static void
 prom_fini(void *data)
 {
 	struct nvkm_device *device = data;
-	if (device->card_type < NV_50)
-		nvkm_mask(device, 0x001850, 0x00000001, 0x00000001);
-	else
-		nvkm_mask(device, 0x088050, 0x00000001, 0x00000001);
+	nvkm_pci_rom_shadow(device->pci, true);
 }
 
 static void *
 prom_init(struct nvkm_bios *bios, const char *name)
 {
 	struct nvkm_device *device = bios->subdev.device;
-	if (device->card_type < NV_50) {
-		if (device->card_type == NV_40 && device->chipset >= 0x4c)
-			return ERR_PTR(-ENODEV);
-		nvkm_mask(device, 0x001850, 0x00000001, 0x00000000);
-	} else {
-		nvkm_mask(device, 0x088050, 0x00000001, 0x00000000);
-	}
+	if (device->card_type == NV_40 && device->chipset >= 0x4c)
+		return ERR_PTR(-ENODEV);
+	nvkm_pci_rom_shadow(device->pci, false);
 	return device;
 }
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild
new file mode 100644
index 0000000000000..a8e9b0fc447ea
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild
@@ -0,0 +1,6 @@
+nvkm-y += nvkm/subdev/pci/base.o
+nvkm-y += nvkm/subdev/pci/nv04.o
+nvkm-y += nvkm/subdev/pci/nv40.o
+nvkm-y += nvkm/subdev/pci/nv4c.o
+nvkm-y += nvkm/subdev/pci/nv50.o
+nvkm-y += nvkm/subdev/pci/gf100.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c
new file mode 100644
index 0000000000000..6a742659a9019
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+u32
+nvkm_pci_rd32(struct nvkm_pci *pci, u16 addr)
+{
+	return pci->func->rd32(pci, addr);
+}
+
+void
+nvkm_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data)
+{
+	pci->func->wr08(pci, addr, data);
+}
+
+void
+nvkm_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data)
+{
+	pci->func->wr32(pci, addr, data);
+}
+
+void
+nvkm_pci_rom_shadow(struct nvkm_pci *pci, bool shadow)
+{
+	u32 data = nvkm_pci_rd32(pci, 0x0050);
+	if (shadow)
+		data |=  0x00000001;
+	else
+		data &= ~0x00000001;
+	nvkm_pci_wr32(pci, 0x0050, data);
+}
+
+void
+nvkm_pci_msi_rearm(struct nvkm_pci *pci)
+{
+	pci->func->msi_rearm(pci);
+}
+
+static void *
+nvkm_pci_dtor(struct nvkm_subdev *subdev)
+{
+	return nvkm_pci(subdev);
+}
+
+static const struct nvkm_subdev_func
+nvkm_pci_func = {
+	.dtor = nvkm_pci_dtor,
+};
+
+int
+nvkm_pci_new_(const struct nvkm_pci_func *func, struct nvkm_device *device,
+	      int index, struct nvkm_pci **ppci)
+{
+	struct nvkm_pci *pci;
+	if (!(pci = *ppci = kzalloc(sizeof(**ppci), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&nvkm_pci_func, device, index, 0, &pci->subdev);
+	pci->func = func;
+	return 0;
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/gf100.c
new file mode 100644
index 0000000000000..86f8226532d3a
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/gf100.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+static void
+gf100_pci_msi_rearm(struct nvkm_pci *pci)
+{
+	nvkm_pci_wr08(pci, 0x0704, 0xff);
+}
+
+static const struct nvkm_pci_func
+gf100_pci_func = {
+	.rd32 = nv40_pci_rd32,
+	.wr08 = nv40_pci_wr08,
+	.wr32 = nv40_pci_wr32,
+	.msi_rearm = gf100_pci_msi_rearm,
+};
+
+int
+gf100_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&gf100_pci_func, device, index, ppci);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv04.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv04.c
new file mode 100644
index 0000000000000..5b1ed42cb90b9
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv04.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+static u32
+nv04_pci_rd32(struct nvkm_pci *pci, u16 addr)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	return nvkm_rd32(device, 0x001800 + addr);
+}
+
+static void
+nv04_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	nvkm_wr08(device, 0x001800 + addr, data);
+}
+
+static void
+nv04_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	nvkm_wr32(device, 0x001800 + addr, data);
+}
+
+static const struct nvkm_pci_func
+nv04_pci_func = {
+	.rd32 = nv04_pci_rd32,
+	.wr08 = nv04_pci_wr08,
+	.wr32 = nv04_pci_wr32,
+};
+
+int
+nv04_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&nv04_pci_func, device, index, ppci);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv40.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv40.c
new file mode 100644
index 0000000000000..090a187f165f3
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv40.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+u32
+nv40_pci_rd32(struct nvkm_pci *pci, u16 addr)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	return nvkm_rd32(device, 0x088000 + addr);
+}
+
+void
+nv40_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	nvkm_wr08(device, 0x088000 + addr, data);
+}
+
+void
+nv40_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	nvkm_wr32(device, 0x088000 + addr, data);
+}
+
+static void
+nv40_pci_msi_rearm(struct nvkm_pci *pci)
+{
+	nvkm_pci_wr08(pci, 0x0068, 0xff);
+}
+
+static const struct nvkm_pci_func
+nv40_pci_func = {
+	.rd32 = nv40_pci_rd32,
+	.wr08 = nv40_pci_wr08,
+	.wr32 = nv40_pci_wr32,
+	.msi_rearm = nv40_pci_msi_rearm,
+};
+
+int
+nv40_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&nv40_pci_func, device, index, ppci);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv4c.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv4c.c
new file mode 100644
index 0000000000000..1f1b26b5fa729
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv4c.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+static const struct nvkm_pci_func
+nv4c_pci_func = {
+	.rd32 = nv40_pci_rd32,
+	.wr08 = nv40_pci_wr08,
+	.wr32 = nv40_pci_wr32,
+};
+
+int
+nv4c_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&nv4c_pci_func, device, index, ppci);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv50.c
new file mode 100644
index 0000000000000..3e167d4a381f4
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv50.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+#include <core/pci.h>
+
+/* MSI re-arm through the PRI appears to be broken on the original G80,
+ * so we access it via alternate PCI config space mechanisms.
+ */
+static void
+nv50_pci_msi_rearm(struct nvkm_pci *pci)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	struct pci_dev *pdev = device->func->pci(device)->pdev;
+	pci_write_config_byte(pdev, 0x68, 0xff);
+}
+
+static const struct nvkm_pci_func
+nv50_pci_func = {
+	.rd32 = nv40_pci_rd32,
+	.wr08 = nv40_pci_wr08,
+	.wr32 = nv40_pci_wr32,
+	.msi_rearm = nv50_pci_msi_rearm,
+};
+
+int
+nv50_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&nv50_pci_func, device, index, ppci);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h
new file mode 100644
index 0000000000000..d22c2c117106e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h
@@ -0,0 +1,19 @@
+#ifndef __NVKM_PCI_PRIV_H__
+#define __NVKM_PCI_PRIV_H__
+#define nvkm_pci(p) container_of((p), struct nvkm_pci, subdev)
+#include <subdev/pci.h>
+
+int nvkm_pci_new_(const struct nvkm_pci_func *, struct nvkm_device *,
+		  int index, struct nvkm_pci **);
+
+struct nvkm_pci_func {
+	u32 (*rd32)(struct nvkm_pci *, u16 addr);
+	void (*wr08)(struct nvkm_pci *, u16 addr, u8 data);
+	void (*wr32)(struct nvkm_pci *, u16 addr, u32 data);
+	void (*msi_rearm)(struct nvkm_pci *);
+};
+
+u32 nv40_pci_rd32(struct nvkm_pci *, u16);
+void nv40_pci_wr08(struct nvkm_pci *, u16, u8);
+void nv40_pci_wr32(struct nvkm_pci *, u16, u32);
+#endif